Green paint refers to energy-saving, low-pollution waterborne paints, powder coatings, high-solids coatings, and radiation-cured coatings. Almost all coatings were solvent-based before the 1970s. Since the 1970s, due to the increasing price of solvents and the requirement to reduce VOC emissions, more and more low-organic solvent and organic-solvent-free coatings have been obtained. development of. Experts from the China Epoxy Resin Industry Association stated that more and more green paints are now being used, but from the perspective of base material performance and current usage, epoxy resin substrate coatings will become the dominant green paint.
At present, better green paints are applied, firstly solid content solvent paints. High-solids solvent-based coatings are developed on the basis of common solvent-based coatings in order to meet increasingly stringent environmental protection requirements. The main features are the reduction of organic solvents and the increase of solids under the premise that existing production methods and coating processes can be utilized. Components. According to experts from the China Epoxy Resin Industry Association, these types of coatings were developed in the United States since the early 1980s. Usually the solids content of low-solids solvent-borne coatings ranges from 30% to 50%, while previously high solids solvents Type (HSSC) coatings require solids to reach 65% to 85%. At present, some advanced companies at home and abroad have epoxy solid content solvent-borne coatings with solids content up to 100%.
The second is water-based paint. The introduction of water into the paint not only reduces the cost of the paint and the fire caused by the presence of organic solvents in the construction, but also greatly reduces the VOC. Therefore, the water-based paint has developed rapidly since its inception. At present, the use of water-based paints has accounted for about half of all paints. There are mainly three types of water-soluble, water-dispersible and latex-based paints. Most of them are epoxy resin substrates, and only epoxy resin substrates are water-based paints. Both the good performance and the environmental impact are the smallest.
Powder coating is an important development species, and it is also a relatively advanced domestic coating. In theory, it is an absolute zero-VOC coating, but the application of the restrictions requires more in-depth research. For example, the manufacturing process is relatively complicated, the manufacturing cost of the coating is high, the baking temperature is much higher than that of a common coating, a thin coating is difficult to obtain, the color matching property of the coating is poor, uniform coating properties of irregular objects are poor, and the like needs further improvement. It is one of the directions for future development. Experts from the China Epoxy Resin Industry Association stated that the substrate for powder coatings is also based on epoxy and epoxy/polyester, accounting for about 85%.
Liquid solvent-free coatings also have a large market space. Non-solvent organic solvent-free paints have two-liquid type, energy beam curing type, etc. The latest development trend is the development of single-liquid type, and can be used ordinary paint, spray painting process liquid solvent-free coatings. The research and development direction of coatings has become more and more clear. It is to seek coatings that continuously reduce VOCs until they reach zero, and the scope of their use should be as wide as possible, superior in performance, and appropriate in equipment investment. Therefore, waterborne coatings, powder coatings, and solvent-free coatings may become the main direction of future coatings development. Since the substrate of these coatings is mainly epoxy resin, experts from the China Epoxy Resin Industry Association proposed that epoxy resin substrates dominate the development of green coatings.
At present, better green paints are applied, firstly solid content solvent paints. High-solids solvent-based coatings are developed on the basis of common solvent-based coatings in order to meet increasingly stringent environmental protection requirements. The main features are the reduction of organic solvents and the increase of solids under the premise that existing production methods and coating processes can be utilized. Components. According to experts from the China Epoxy Resin Industry Association, these types of coatings were developed in the United States since the early 1980s. Usually the solids content of low-solids solvent-borne coatings ranges from 30% to 50%, while previously high solids solvents Type (HSSC) coatings require solids to reach 65% to 85%. At present, some advanced companies at home and abroad have epoxy solid content solvent-borne coatings with solids content up to 100%.
The second is water-based paint. The introduction of water into the paint not only reduces the cost of the paint and the fire caused by the presence of organic solvents in the construction, but also greatly reduces the VOC. Therefore, the water-based paint has developed rapidly since its inception. At present, the use of water-based paints has accounted for about half of all paints. There are mainly three types of water-soluble, water-dispersible and latex-based paints. Most of them are epoxy resin substrates, and only epoxy resin substrates are water-based paints. Both the good performance and the environmental impact are the smallest.
Powder coating is an important development species, and it is also a relatively advanced domestic coating. In theory, it is an absolute zero-VOC coating, but the application of the restrictions requires more in-depth research. For example, the manufacturing process is relatively complicated, the manufacturing cost of the coating is high, the baking temperature is much higher than that of a common coating, a thin coating is difficult to obtain, the color matching property of the coating is poor, uniform coating properties of irregular objects are poor, and the like needs further improvement. It is one of the directions for future development. Experts from the China Epoxy Resin Industry Association stated that the substrate for powder coatings is also based on epoxy and epoxy/polyester, accounting for about 85%.
Liquid solvent-free coatings also have a large market space. Non-solvent organic solvent-free paints have two-liquid type, energy beam curing type, etc. The latest development trend is the development of single-liquid type, and can be used ordinary paint, spray painting process liquid solvent-free coatings. The research and development direction of coatings has become more and more clear. It is to seek coatings that continuously reduce VOCs until they reach zero, and the scope of their use should be as wide as possible, superior in performance, and appropriate in equipment investment. Therefore, waterborne coatings, powder coatings, and solvent-free coatings may become the main direction of future coatings development. Since the substrate of these coatings is mainly epoxy resin, experts from the China Epoxy Resin Industry Association proposed that epoxy resin substrates dominate the development of green coatings.
Electronic Red Dot Sights,Good Quality Red Dot Sights,Is Red Dot Sights Accurate,Laser Red Dot Sights
Nantong Dinggo Optical Instrument Co.,Ltd , https://www.focuhunterequip.com